Axial positioning structure of water pump impeller

Abstract

The utility model belongs to the technical field of water pumps, and particularly relates to a water pump impeller axial positioning structure which comprises a lantern ring, a first protruding block and a second protruding block pointing to the circle center of the lantern ring are fixedly arranged on the inner side wall of the lantern ring in an up-down symmetry mode, and two first guide holes penetrating through the first protruding block are formed in the outer wall of the lantern ring. The utility model has the advantages that the pressing plate I and the pressing plate II respectively extrude the baffle plate I and the baffle plate II on the convex block I and the convex block II under the extrusion action of the spring, so that the guide pin I extends outwards and is inserted on the impeller, the impeller and the lantern ring are sleeved and fixed, the impeller is sleeved on the outer side of the lantern ring, and the baffle plate III is limited in the clamping groove; the third guide pin is inserted into the fourth guide hole of the driving shaft, so that the lantern ring and the driving shaft are sleeved and fixed, bolt fastening is not adopted, dismounting and mounting are convenient, and compared with bolt fastening, the positioning structure is long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to an axial positioning structure for a water pump impeller. Background Art

[0002] The impeller of the existing water pump and the driving shaft of the water pump are mostly fixedly connected by inserting fastening bolts. When the impeller or the driving shaft is repaired, the fastening bolts need to be removed. If the bolts are repeatedly removed, the corresponding bolt holes are prone to wear. If the bolts are removed when the water pump is wet, the threads of the bolts are prone to contact with water and rust, which reduces the service life of the bolts. In addition, the water pump will vibrate when working, and the bolts are prone to loosening after working for a long time.

[0003] In order to solve the above problems, we proposed a water pump impeller axial positioning structure. Utility Model Content

[0004] The utility model aims to solve the problems in the background technology and proposes an axial positioning structure for a water pump impeller.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an axial positioning structure of an impeller of a water pump, comprising a collar, the inner side wall of the collar is symmetrically fixed with a protrusion 1 and a protrusion 2 pointing to the center of the collar, the outer wall of the collar is provided with two guide holes 1 penetrating the protrusion 1, the outer wall of the collar is provided with two guide holes 2 penetrating the protrusion 2, the end of the protrusion 1 is provided with a baffle 1, the end of the protrusion 2 is provided with a baffle 2, a guide pin 1 is slidably inserted in the guide hole 1 and the guide hole 2, the guide pin 1 in the protrusion 1 is fixedly connected to the outer wall of the baffle 1, the guide pin 1 in the protrusion 2 is fixedly connected to the outer wall of the baffle 2, an elastic limiting mechanism is provided between the baffle 1 and the baffle 2, a strip notch is provided on the end face of the driving shaft of the water pump, both ends of the strip notch penetrate the outer wall of the driving shaft, and the protrusion 1 and the protrusion 2 are both embedded in the strip notch.

[0006] In the above-mentioned axial positioning structure of a water pump impeller, the elastic limiting mechanism includes pressure plate one and pressure plate two, and pressure plate one and pressure plate two correspond to baffle plate one and baffle plate two respectively. A partition is arranged between pressure plate one and pressure plate two, and a spring is fixedly connected between the partition and pressure plate one and pressure plate two.

[0007] In the above-mentioned axial positioning structure of the water pump impeller, the outer wall of the collar is symmetrically provided with two slots, the inner bottom wall of the slot is provided with a guide hole three penetrating the collar, the outer wall of the water pump drive shaft is symmetrically provided with a guide hole four corresponding to the guide hole three, a baffle three is arranged in the slot, a guide pin two is slidably inserted in the guide hole three and the corresponding guide hole four, and the guide pin two is fixedly connected to the baffle three.

[0008] In the above-mentioned water pump impeller axial positioning structure, the outer walls of the baffle plate 1 and the baffle plate 2 are both provided with a planar groove, and a raised step is formed between the front ends of the baffle plate 1 and the baffle plate 2 and their respective planar grooves.

[0009] In the above-mentioned water pump impeller axial positioning structure, the pressure plate 1 and the pressure plate 2 are respectively located in the corresponding planar grooves, and the front ends of the pressure plate 1 and the pressure plate 2 are respectively fixedly connected with the paddle plate 1 and the paddle plate 2, and a finger distance is set between the ends of the paddle plate 1 and the paddle plate 2 and the corresponding steps.

[0010] In the above-mentioned water pump impeller axial positioning structure, the outer wall of the baffle plate three is coplanar with the outer wall of the collar, and a finger-sized spacing is arranged between the side wall of the baffle plate three and the slot.

[0011] Compared with the existing technology, the advantages of this water pump impeller axial positioning structure are:

[0012] In the utility model, pressure plates one and two in the utility model respectively squeeze baffle plates one and two onto protrusions one and two under the extrusion action of the spring, so that guide pin one extends outward and is inserted on the impeller, so that the impeller and the sleeve ring are fixed, and the impeller is sleeved on the outside of the sleeve ring, so that baffle plate three is restricted in the slot, and guide pin three is inserted in guide hole four of the drive shaft, so that the sleeve ring and the drive shaft are fixed, and bolts are not used for fastening, so disassembly and assembly are convenient. Compared with bolt fastening, the service life of the positioning structure is longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of an axial positioning structure for a water pump impeller proposed by the utility model;

[0014] Figure 2 This is a schematic structural diagram of a collar and a fixing member of an axial positioning structure for a water pump impeller proposed by the utility model;

[0015] Figure 3 This is a front view of an axial positioning structure for a water pump impeller proposed by the utility model.

[0016] In the figure: 1 collar, 2 protrusion 1, 3 protrusion 2, 4 guide hole 1, 5 guide hole 2, 6 baffle 1, 7 baffle 2, 8 guide pin 1, 9 pressure plate 1, 10 pressure plate 2, 11 partition plate, 12 spring, 13 slot, 14 guide hole 3, 15 baffle 3, 16 guide pin 2, 17 plane slot, 18 dial plate 1, 19 dial plate 2. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] Reference Figure 1-Figure 3 A water pump impeller axial positioning structure comprises a collar 1, wherein the inner side wall of the collar 1 is symmetrically fixed with a protrusion 2 and a protrusion 3 pointing to the center of the collar 1, the outer wall of the collar 1 is provided with two guide holes 4 penetrating the protrusion 2, the outer wall of the collar 1 is provided with two guide holes 5 penetrating the protrusion 3, the end of the protrusion 2 is provided with a baffle 6, the end of the protrusion 3 is provided with a baffle 7, a guide pin 8 is slidably inserted in the guide hole 4 and the guide hole 5, the guide pin 8 in the protrusion 2 is fixedly connected to the outer wall of the baffle 6, the guide pin 8 in the protrusion 3 is fixedly connected to the outer wall of the baffle 7, and a baffle 6 is provided between the baffle 6 and the baffle 7. The elastic limiting mechanism, when the elastic limiting mechanism presses the baffle 1 6 and the baffle 2 7 with the ends of the protrusion 1 2 and the protrusion 2 3 respectively, the outer ends of the guide pin 1 8 both extend out of the outside of the collar 1, and the outer wall of the collar 1 is movably sleeved with an impeller, and the inner wall of the impeller is provided with a guide hole 5 corresponding to the guide pin 8. When the guide pin 1 8 extends outward, the end of the guide pin 8 will be slidably inserted into the guide hole 5, so that the impeller and the collar 1 are kept fixed, and the end face of the driving shaft of the water pump is provided with a strip groove, and the two ends of the strip groove penetrate the outer wall of the driving shaft. When the collar 1 is sleeved on the driving shaft, the protrusion 1 2 and the protrusion 2 3 are both fitted with the strip groove, thereby preventing the collar 1 from rotating on the driving shaft.

[0019] The elastic limiting mechanism includes a pressure plate 19 and a pressure plate 2 10, which correspond to baffle 1 6 and baffle 2 7 respectively. A partition 11 is arranged between the pressure plate 19 and the pressure plate 2 10, and a spring 12 is fixedly connected between the partition 11 and the pressure plates 19 and 10. Under the elastic squeezing action of the spring 12, the pressure plates 19 and 10 expand outward and squeeze the baffle 1 6 and the baffle 2 7 respectively, so that the baffle 1 6 and the baffle 2 7 are pressed together with the ends of the protrusion 1 2 and the protrusion 2 3 respectively.

[0020] The outer wall of the collar 1 is symmetrically provided with two slots 13, and the inner bottom walls of the slots 13 are provided with guide holes 3 14 penetrating the collar 1, and the outer wall of the water pump driving shaft is symmetrically provided with guide holes 4 corresponding to the guide holes 3 14, and baffles 3 15 are arranged in the slots 13, and guide pins 2 16 are slidably inserted in the guide holes 3 14 and the corresponding guide holes 4, and the guide pins 2 16 are fixedly connected to the baffles 3 15. When the impeller is sleeved, the baffles 3 15 are located in the corresponding slots 13. When the impeller is sleeved on the outer wall of the collar 1, the inner side wall of the impeller forms a limit for the baffles 3 15, so that the guide pins 2 16 remain inserted in the guide holes 3 14 and the guide holes 4 to prevent the collar 1 from sliding on the driving shaft. Under the joint action of the guide pins 2 16 and the protrusions 1 2 and 2 3, the collar 1 and the driving shaft of the water pump remain fixed and have high stability.

[0021] The outer walls of the baffle plate 16 and the baffle plate 27 are both provided with a plane groove 17, and a raised step is formed between the front ends of the baffle plate 16 and the baffle plate 27 and the respective plane grooves 17. The pressing plate 19 and the pressing plate 210 are respectively located in the corresponding plane grooves 17, and the steps limit the pressing plate 19 and the pressing plate 210, thereby improving the stability of the pressing of the pressing plate 19 and the pressing plate 210 relative to the baffle plate 16 and the baffle plate 210. The front ends of the pressing plate 19 and the pressing plate 210 are respectively fixedly connected with a paddle plate 18 and a paddle plate 219, and a finger spacing is set between the ends of the paddle plate 18 and the paddle plate 219 and the corresponding steps, and the pressing plate 19 can be manipulated by the paddle plate 18 and the paddle plate 219. The front end of the pressure plate 10 is deflected, so that the compression spring 12 is convenient for taking the pressure plates 1 9 and 10 out of the plane groove 17, or inserting the pressure plates 1 9 and 10 into the plane groove 17 from the outside. The outer wall of the baffle plate 3 15 is coplanar with the outer wall of the collar 1, and a finger's distance is set between the side wall of the baffle plate 3 15 and the card groove 13, so that the baffle plate 3 15 is convenient for manipulating the baffle plate 3 15 to take out the guide pin 2 16 from the guide hole 3 14 and the guide hole 4. Since the positioning structure adopts a latch limiter to fix the impeller and the drive shaft, and does not adopt bolts to tighten, the erosion of the bolt thread or the loosening of the bolt is avoided, so the service life of the positioning structure is high and it is easy to disassemble and assemble.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water pump impeller axial positioning structure, comprising a collar (1), characterized in that: The inner side wall of the collar (1) is symmetrically fixed with a protrusion 1 (2) and a protrusion 2 (3) pointing to the center of the collar (1), the outer wall of the collar (1) is provided with two guide holes 1 (4) penetrating the protrusion 1 (2), the outer wall of the collar (1) is provided with two guide holes 2 (5) penetrating the protrusion 2 (3), the end of the protrusion 1 (2) is provided with a baffle 1 (6), the end of the protrusion 2 (3) is provided with a baffle 2 (7), the guide holes 1 (4) and the guide holes 2 (5) are provided with a plurality of guide holes 1 (4) and 1 (5). A guide pin (8) is slidably inserted inside the projection (2), the guide pin (8) inside the projection (2) is fixedly connected to the outer wall of the baffle (6), the guide pin (8) inside the projection (3) is fixedly connected to the outer wall of the baffle (7), an elastic limiting mechanism is provided between the baffle (6) and the baffle (7), a strip groove is provided on the end surface of the driving shaft of the water pump, the two ends of the strip groove penetrate the outer wall of the driving shaft, and the projection (2) and the projection (3) are both engaged with the strip groove.

2. The water pump impeller axial positioning structure according to claim 1, characterized in that: The elastic limiting mechanism comprises a pressure plate 1 (9) and a pressure plate 2 (10), wherein the pressure plate 1 (9) and the pressure plate 2 (10) correspond to the baffle plate 1 (6) and the baffle plate 2 (7) respectively, a partition plate (11) is arranged between the pressure plate 1 (9) and the pressure plate 2 (10), and a spring (12) is fixedly connected between the partition plate (11) and the pressure plate 1 (9) and the pressure plate 2 (10).

3. The water pump impeller axial positioning structure according to claim 1, characterized in that: The outer wall of the collar (1) is symmetrically provided with two slots (13), the inner bottom wall of the slots (13) is provided with three guide holes (14) penetrating the collar (1), the outer wall of the water pump drive shaft is symmetrically provided with four guide holes corresponding to the three guide holes (14), a baffle plate (15) is arranged in the slots (13), a guide pin (16) is slidably inserted in the three guide holes (14) and the corresponding four guide holes, and the guide pin (16) is fixedly connected to the three baffle plates (15).

4. The water pump impeller axial positioning structure according to claim 2, characterized in that: The outer walls of the baffle plate 1 (6) and the baffle plate 2 (7) are both provided with a plane groove (17), and a raised step is formed between the front ends of the baffle plate 1 (6) and the baffle plate 2 (7) and the respective plane grooves (17).

5. The water pump impeller axial positioning structure according to claim 4, characterized in that: The pressing plate 1 (9) and the pressing plate 2 (10) are respectively located in the corresponding plane grooves (17); the front ends of the pressing plate 1 (9) and the pressing plate 2 (10) are respectively fixedly connected with the paddle plate 1 (18) and the paddle plate 2 (19); a finger-sized distance is set between the ends of the paddle plate 1 (18) and the paddle plate 2 (19) and the corresponding steps.

6. The water pump impeller axial positioning structure according to claim 3, characterized in that: The outer wall of the baffle plate three (15) is coplanar with the outer wall of the sleeve ring (1), and a finger-sized gap is provided between the side wall of the baffle plate three (15) and the clamping groove (13).

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